LONDON UK
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« on: March 08, 2013, 04:54:44 pm » |
anyone tried or even seen them despite their high costs ? looks like the way to go ,they last 20 years without a re charge ¬ i dont know how common or what price is tritium to make the batteries . sound s like a job for Doc Oc
$1200 for a unit..phew ,but 20 years usage sounds usefull ...
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UK
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What a host of balls she had seen: gaity, the brass buttons...
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« Reply #1 on: March 08, 2013, 05:04:52 pm » |
NASA use them... They're on Curiosity right now, trundling around Mars. You might ask them if you can take it for a spin...
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Samplefinger
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ALWAYS ASK FOR THREE. One to use. One to lose. One to abuse.
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« Reply #3 on: March 08, 2013, 07:04:23 pm » |
I prefer mine bigger... 
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UK
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What a host of balls she had seen: gaity, the brass buttons...
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« Reply #4 on: March 08, 2013, 07:08:48 pm » |
Show off.
Is that you stood next to it?
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Austin, TX
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Faraday Member
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CMiYC
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« Reply #5 on: March 08, 2013, 08:18:57 pm » |
So. Many. Inappropriate. Jokes.
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London
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« Reply #6 on: March 08, 2013, 10:11:14 pm » |
Show off.
Is that you stood next to it?
Yep. But you can't see him when he hasn't got his bandages on...
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Samplefinger
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ALWAYS ASK FOR THREE. One to use. One to lose. One to abuse.
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« Reply #7 on: March 08, 2013, 10:16:41 pm » |
That is a NASA physicist or contractor and she is certainly female, no that is not me. The link is a hot-link to Wikipedia's article on RTGs. http://en.wikipedia.org/wiki/Radioisotope_thermoelectric_generator
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LONDON UK
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« Reply #8 on: March 09, 2013, 02:42:57 pm » |
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0
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Arduino rocks
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« Reply #9 on: March 09, 2013, 02:50:38 pm » |
Let me sell you a pack of "Prosperity Seeds" so you will be rich!
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Samplefinger
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ALWAYS ASK FOR THREE. One to use. One to lose. One to abuse.
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« Reply #10 on: March 09, 2013, 03:22:16 pm » |
The half life of tritium is 12.32 years. It's not going to last 1000 years. After 100 years only 0.36% will remain. After 1000 years, 3.7E-25. I'm sure the betavoltaics have a cutoff threshold at some point where there is no voltage despite some residual beta activity.
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